文档名：餐厨废大豆油改性沥青性能研究
摘要：公路建设消耗大量的石油资源,给节约资源、保护环境带来一定的压力.生物沥青的研发一方面促进了生物质资源的再生利用,另一方面直接或间接减少了石油沥青的开采.以餐厨废大豆油为添加剂,制备了废大豆油改性沥青.通过针入度、软化点和黏度等常规性能试验以及多重应力蠕变与恢复试验(MSCR)、线性振幅扫描试验(LAS)等流变性能探究了废大豆油对基质沥青路用性能的影响.结果表明:由于废大豆油自身轻质组分多、黏度小等物化特征,废大豆油提高了沥青的针入度,降低了沥青的软化点及黏度,并且废豆油掺量越多,这种改性效果越明显.掺入6%的废豆油能使70#和90#基质沥青的针入度分别提高93.2%和68.6%,使软化点分别降低7.9℃和4.9℃,使黏度分别降低31.3%和22.9%.黏度的降低改善了沥青的施工和易性,6%掺量的废豆油可使70#和90#沥青的拌合温度降低9.4℃和6.6℃,压实温度降低10.8℃和8.2℃.此外,废大豆油增加了沥青的不可恢复蠕变柔量,降低了变形恢复率.因此,废豆油使沥青黏性成分增加,抗高温蠕变性能降低,但增加了重复荷载下沥青的疲劳寿命.实际应用中,废豆油掺量可根据地区温度差异进行调整,应在不过多损害高温性能的同时提高低温性能或施工简易性.
Abstract：Highwayconstructionconsumesalargeamountofoilandstoneresources,whichbringscertainpressuretosaveresourcesandprotecttheenvironment.Theresearchanddevelopmentofbio-asphalthavepromotedtheregenerationandutilizationofbiomassresourcesontheonehand,anddirectlyorindirectlyreducedtheexploitationofpetroleumasphaltontheotherhand.Inthispaper,wastesoybeanoilmodifiedasphaltwaspreparedwithwastesoybeanoilasanadditive.Theinfluenceofwastesoybeanoilontheroadperformanceofbaseasphaltwasinvestigatedthroughroutineperformancetestssuchaspenetration,softeningpointandviscosity,andrheologicalpropertiesincludingmultiplestresscreepandrecoverytest(MSCR)andlinearamplitudescanningtest(LAS).Theresultsshowedthatduetothephysicalandchemicalcharacteristicsofwastesoybeanoil,suchashavingmanylightcomponentsandlowviscosity,wastesoybeanoilimprovedthepenetrationofasphaltandreducedthesofteningpointandviscosityofasphalt.Themorewastesoybeanoilwasadded,themoreobviousthemodificationeffectwas.Thepenetrationof70#and90#baseasphaltincreasedby93.2%and68.6%,thesofteningpointdecreasedby7.9℃and4.9℃,andtheviscositydecreasedby31.3%and22.9%respectivelybyadding6%wastesoybeanoil.Thereductionofviscosityimprovedtheworkabilityofasphaltconstruction.Blending6%wastesoybeanoilcouldreducethemixingtemperatureof70#and90#asphaltby9.4℃and6.6℃,andthecompactiontemperatureby10.8℃and8.2℃.Inaddition,wastesoybeanoilincreasedtheirrecoverablecreepflexibilityofasphaltandreducedthedeformationrecoveryrate.Therefore,wastesoybeanoilincreasedtheviscouscomponentofasphaltandreducedthecreepresistanceathightemperatures,butincreasedthefatiguelifeofasphaltunderrepeatedload.Inpracticalapplication,theamountofwastesoybeanoilshouldbeadjustedaccordingtotheregionaltemperature,andthelow-temperatureperformanceorconstructionworkabilitycouldbeimprovedwhilenotdamagingthehigh-temperatureperformancetoomuch.
作者：沙耀华 宋文佳 Author：SHAYao-hua SONGWen-jia
作者单位：广西交通设计集团有限公司,广西南宁530029西安外事学院工学院,陕西西安710077
刊名：当代化工
Journal：ContemporaryChemicalIndustry
年，卷(期)：2024, 53(1)
分类号：TU528.044
关键词：道路工程 生物沥青 废大豆油 高温性能 和易性
Keywords：Roadengineering Bio-asphalt Wastesoybeanoil Hightemperatureperformance Workability
机标分类号：U416.217TE6U214.18
在线出版日期：2024年2月3日
基金项目：陕西省教育厅专项基金项目餐厨废大豆油改性沥青性能研究[
期刊论文] 当代化工--2024, 53(1)沙耀华 宋文佳公路建设消耗大量的石油资源,给节约资源、保护环境带来一定的压力.生物沥青的研发一方面促进了生物质资源的再生利用,另一方面直接或间接减少了石油沥青的开采.以餐厨废大豆油为添加剂,制备了废大豆油改性沥青.通过针入...参考文献和引证文献
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